Pontiac V8 265-455 1955-1981Adv. Duration: 288/298Duration @ .050": 214/224Lift: .444/.466
Lobe Separation: 112 LCIncludes Lifters: No2000-4800. Fair idle, improved power.
Pontiac V8 265-455 1955-1981Adv. Duration: 287/287Duration @ .050": 231/231Lift: .480/.480
Lobe Separation: 110 LCIncludes Lifters: No2200-5400. Lopey idle, hot Street/Strip.